| Component: (Network and Table) | |
|---|---|
| Network | 2418402 - Disclosure - Other Expenses, Net (Details) (http://www.ameresco.com/role/OtherExpensesNetDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001488139 (http://www.sec.gov/CIK) |
| Other Income and Expenses [Abstract] | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | 2014-01-01 - 2014-12-31 | |
Other Income and Expenses [Abstract] | |||
Unrealized gain on interest rate swaps | ( | ( | ( |
Interest expense, net of interest income | |||
Amortization of deferred financing fees, net | |||
Foreign currency transaction loss | |||
Other expenses, net | 7,409,000 | 6,765,000 | 6,859,000 |